Machine foe treating hides



(No Model.) Q 5 Shee.ts-Sheet 1.

J. HALL.

MACHINE FOR TREATING HIDES, SKINS, 0R LEATHER. No. 599,331. PatentedFeb. 22,1898.

5 Sheets-Sheet 3.

(No Model.)

J. HALL. MACHINE FOR TREATING HIDES, SKINS,

0R LEATHER.

Patented Feb. {22* 1898.

(No Model.) 5 Sheets-Sheet 5. J. HALL.

. MACHINE FOR TREATING HIDES, SKINS, 0R LEATHER.

Patented Feb. 22, 1898.

llnrrrnn a'rnr rrrcn.

JOSEPH HALL, OF LEEDS, ENGLAND.

MACHlNE FOR TREATlNG HIDES. SKINS, OR LEATHER.

.SPECIFICATION forming part of Letters Patent No. 599,331, datedFebruary 22, 1898.

Application filed October 16, 1896. Serial No. 609,067. (No model.)Patented in England February 25, 1896, No. 4,199.

To a/ZZ 1071 0712 it may concern:

Be it known that I, JosEPH HALL, a subject of the Queen of GreatBritain, residing at Leeds, in the county of York, England, haveinvented certain new and useful Improvements in Machines for TreatingHides, Skins, or Leather, (for which I obtained Letters Patent of GreatBritain, No. 4,199, dated Febru ary 25, 1896,) of which the following isa specification.

My invention has relation to a machine for treating hides, skins, orleather of the general type set forth in the United States LettersPatent No. 274,858, dated March 27,1883; and in such connection itrelates to the construction and arrangement of such a machine.

My invention, stated in general terms, consists of a machine fortreating hides, skins, or leather constructed and arranged insubstantially the manner hereinafter described and claimed.

The nature and scope of my invention will be more fully understood fromthe following description, taken in connection with the ac companyingdrawings, forming part hereof, in which- Figure 1 is a front elevationof a machine embodying main features of my invention. Fig. 2 is a top orplan View thereof. Fig. 3 is an end elevation of the machine,illustrating the mechanism for imparting motion to the vertical tableand for rotating the working rolls or cylinders. Fig. 4 is an endelevation illustrating in detail the means for moving the working rollsor cylinders toward or from each other. Fig. 5 is a vertical sectionalview illustrating in detail the means for shifting the apron on thevertically-movable table. Fig. 6 is an end View, enlarged, of the upperedge of the vertical table, showing the edge as solid and rounded. Fig.7 is a similar View of the table, the upper curved edge being shown asrevolving on antifriction-rolls Fig. 8 is an end view of a modified formof table wherein the lower edge is curved and revoluble and illustratinga modified form of mechanism for shifting the apron. Fig. 9 is avertical sectional view illustrating in detail mechanism whereby theshifting of the apron on the table may be stopped. Fig. 10 is a frontelevational view of Fig. 9. Fig. 11 is a perspective view, enlarged, ofone of the oscillating arms to which the lower end of the apronillustated in Figs. 1, 5, 9, and 10 is secured. Fig. 12 is a frontelevational view, enlarged, of the nipping-bar and of the catch adaptedto bind and release the bar to and from the upper edge of the verticaltable. Fig. 13 is an enlarged front view of a modified form of theclutch mechanism illustrated in Fig. 1 for regulating the movement ofthe table, and Fig. let is a top or plan view of Fig. 13.

Referring to the drawings, A A represent the working rolls or cylinders,which are each carried by links or arms A having swivelbearings A in theframework of the machine. These arms A extend below the workingcylinders A A, and their extremities are pivotally secured to a shaft Ato which shaft the links A are also pivoted, the links being alsopivoted, as at A, to each other and to the vertical rod H When this rodII is elevated, the arms A are swung outward away from each other, andwhen the rod H is depressed the arms A are brought closer together, thearms swinging on their bearings A. Motion is imparted to the verticalrod 11*, at suitable intervals during the movement of the machine,either by the hand-lever A or by mechanism hereinafter described, whichis controlled by the movement of the table F. The working rolls A aredriven in opposite directions from a counter-shaft V by pulleys S S Sand S and the belts S and S SUbSlJELH".

tially as shown in Figs. 1 and 3. The bearings A of the rolls haveelastic supports A designed to keep the belts under proper tension.

The table F is substantially wedge-shaped in cross-section, and upon thetable is placed an apron N, upon which the hide or skin is supported.Hitherto that portion H of the hide or skin which rests upon the topedge of the table was not worked by the rolls A unless the hide or skinwas shifted on the apron N or table F by hand. To obviate this manifestdisadvantage, the apron N is made movable on the table, and the movementof the apron N is preferably controlled by the movement imparted to thetable. The table F is secured to one side of each of two endless chainsV operated by sprockets V carried by the shafts V and V, the shaft V ofwhich is driven, as shown in Figs. 1, 2, and

3, by a single chain-wheel or sprocket V operated from the chain-wl1eelV on the counter-shaft V To the base of the table F are connected thearms, formed into two parts S and S, diverging; or bent and secured to arocking shaft N below the lower edge of the table F. On this shaft N aresecured a series of brackets N the arms of which are provided with hooksN to which is secured the apron N, substantially as indicated in Figs.1, 5, and 11. The arms S and S, which by preference are located at oneend of the shaft N, are alternately shifted to give an intermittent orrocking motion to the shaft by means of the following preferredmechanism: Above the arms S and S and adapted to extend in the paththereof are arranged two sprin g-bolts T and T, adapted to be shifted inthe framework of the machine. These bolts are held in their retractedposition by means of the springs Y and spring-pins Y, (shown in Fig. 5,)operated by mechanism hereinafter described.

The two bolts T and Tslide in and are operated by the an gle-arms U,pivoted, as at W, and connected, as at W, to a vertical rod X, guided ina bearing T and having a collar T The sides of the table near the bottomedge are provided with stops T sliding on the rods X,which when thetable is elevated are adapted to come into contact with the collars T ofthe vertical rods X. lV-hen, now, the table ascends, one of the arms Sor S, which is in horizontal position, will abut against a bolt T or Tand the arms S and S-will be rocked, the shaft N, brackets N and apron Nbeing also rocked by the movement of said arms.

As the table continues to ascend the stops T thereof abut against andlift the collars T thus raising the rods X and the levers U throughtheir upright portions U, abutting against the heads T of thespring-bolt T or T, and the bolts are withdrawn and locked by the pin Yof the spring Y. On the descent of the table that arm S or S which hasbeen thrown into substantially horizontal position will strike thespring Y and release the pin Y from the retracted bolt T or T, whichwill then spring into the path of the horizontal arm S or S.

The table F, which carries the apron N, may have either a fixed curvedupper edge, as indicated in Fig. 6, or a roller F, working, preferably,on antifriction-bearings F placed in the concave upper edge of thetable, as shown in Fig. 7. In Fig. 8 an arrangement is shown whereby theapron N is endless and is moved step by step by means of a ratchet O,placed, preferably, on the movable or revoluble lower edge or shaft P ofthe table F, around which the apron is drawn. This ratchet O is operatedby means of a weighted catch P, the

'movement of which is limited by an adj ustable stop R, which preferablyconsists of a set-screw working in a fixed portion of the machine andlocated directly under the catch P. The catch P is pivoted to a fixedstud P, projecting from an upright M of the machine. On the up movementof the table the catch P will operate the ratchet O and turn the apronN. By elevating the weighted end of the catch P the catch may bereleased from the ratchet and no motion to the apron will be given.

The automatic movement to the apron N may be prevented, as illustratedin Fig. 9, by interposing a rocker-arm Z, carrying a spring or rubberbuffer Z, in the path of the table to prevent its descent, so that thearms S and S shall not come into contact with the drawbolts T and T orthe ratchet 0 into engagement with the catch P. These rocker-arms Z aresecured to the shaft Z and are operated by a hand-lever Z, substantiallyas shown in Fig. 9.

As illustrated in Figs. 1 and 12, above the rolls A is placed ahorizontally-arranged bar J, which when the vertical table F is elevatedto pass the material to be treated between said rolls is designed toclamp or nip the top of the material to the table to hold the same inposition thereon and to prevent the dragging of the material. This topnipping-bar J is provided at either end with a catch K, preferablypivoted, as at K, to the bar J and having two forks or arms K and K oneof which, K is provided with a projection K adapted to slide in theslanting recess ornotch L in the uprights M of the machine. The otherfork, K is adapted to slide under a pin or projection K on the table Fand to thus clamp the bar J down upon the material on the table. Whenthe table ascends, it raises the bar J, .and the projections K travelupward in the grooves or notches L, thus throwin g the fork K intoengagement with the projection K and locking the bar to the table, asindicated by dotted lines in Fig. 12. On the descent of the table F andthe bar J the notches L will release the forks K from the projections Kas indicated in full lines in Fig. 12.

The mechanism for raising the table F may be controlled automatically inone of two ways, viz: The tableF may be raised by the mechanism andallowed to fall by gravity or the table may be raised and loweredpositively by the mechanism. In Figs. 1 and 4 the mechanism illustratedis adapted only to elevate the table, which when it reaches a certainheight automatically releases a clutch to permit the table to fall bygravity.

The mechanism consists, preferably, as follows: On the counter-shaft Vis secured a boss V, operated by a forked clutch V, ongaging the collarV loosely mounted upon the shaft V, as shown in Fig. 14. This clutch Vis connected to a vertically-arranged rod V which rod is coupled to oroperated by the bar H. Loosely rotating on the shaft V is a clutch-box Vhaving a spring-finger V adapted to engage the boss V and to therebylock the clutch-box V to said boss when the ICC) boss is operated by theclutch V. Pivoted to the frame of the machine is a hand-lever V having alatch or stop V, on which the rod or bar H rest-s. When the handle Vwith its stop or latch V is cleared off, the bar H will drop, andthrough the rod V the clutch V will lock the boss V with the clutchboX VThis clutch-box V carries a chainwheel V operating through a chain thewheel V of the shaft V and thereby, as before explained, serves to raisethe table F. As the table ascends the stop or latch V is cleared fromthe bar II by hand, and thereafter the dropping of the bar II servesthrough a slack rope A to depress the bar H and through the links A therolls A are brought together to act on the hide or skin mounted on thetable. The slack rope A connects the bar II to the bar H as shown inFig. 4.

The table F is provided with a stop T, which when the table has ascendeda predetermined distance will engage a stop II on the bar H and servesto lift said bar and to thereby separate the rolls A by means of thearms A The bar 11, by means of the chain or cord A is also lifted untilthe same engages the stop V of the handle V the handle having previouslybeen returned either by hand or a spring (not shown) to itsformerposition. The rod V is correspondingly elevated until the clutch Vmoves the boss V out of engagement with the clutch-box V and permits thetable to descend by gravity. The rolls A may also be brought together bya foot-treadle H carried by the shaft H which through the arm H link Hand arm H is connected with the lever H the lever H and arm H beingpivoted, as at H in the frame of the machine. The lever H operatesthrough the rod H a pulley H under which passes a chain H the ends ofwhich are secured to the axles of the rolls A and pass over theguide-pulleys H attached to the frame of the machine. By depressing thetreadle H the pulley H is lowered and the chains H are tightened tobring the rolls A toward each other.

In Figs. 13 and 14 an arrangement is shown whereby the table F is bothpositively elevated and depressed by the driving mechanism of themachine. In this arrangement there are two clutch-boxes V between whichthe boss V is located. The boss V is connected with the clutch-lever Vbya pin and slot, as shown in Fig. 13. The additional clutch-boX V tothe right of the boss V is geared by means of gears W and W the shaftIV, and chain-wheels W and V with the shaft V so as to reverse themotion of said shaft and hence to lower the table. The table has a stop3*, adapted to respectively lower and raise the rod V through the stopsR and R thereon. WVhen said rod is raised by the stop R on the ascent ofthe table F, the boss V is thrown into engagement with the right-handclutch-box and the countershaft 7 will lower the table. WVhen the tabledescends, its stop R engages the stop R and lowers the rod V and theclutch V throws the boss V into engagement with the lefthand clutch-b0x,whereby the countershaft will raise the table. The clutch or lever V maybe locked into substantially upright position by means of two catches Jand J which are arranged substantially as shown in Figs. 13 and 14. Thecatches J and J 2 each consist of an arm pivoted at one end to the frameof the machine and sliding over the straps J 3 and J Each arm carries alug J 5 or J which is adapted to rest on either side of the lever V, asindicated in Fig. 14:. This arrangement for conveying positiveup-anddown movement to the table operates as follows:

\Vhen the machine is standing still, both the catches J and J 2 areengaging the lever V, thus keeping the boss V out of contact with theclutches. To start the machine, one of the catches is pulled forward,allowing the weighted lever V to be directed to the left or right, asdesired. For example, to start the table up the lever falls to the left,carrying the boss V into contact with the spring finger V thus causingthe clutch V to fasten the chain-wheel W to the counter-shaft V. Thiswheel W drives achain-=wheel V on the shaft V on which shaft arechainwheels, as before, to raise the table. When the table ascends, thestop R comes in contact with the stop R which may have a spring orindia-rubber buffer, and lifts it, thus causing the rod V to raise thelever V and cause it to fall to the other side, carrying the boss V outof contact with the left-hand clutch,whereupon the upward motion of thetable stops and comes into contact with the right-hand clutch. Thislooks the spur-wheel WV to the counter-shaft V thus driving the wheel Won the shaft W in the opposite direction, and by the chain-wheel WV onthe shaft WV drives the table down at any desired speed, according tothe spur-gearing. At the bottom of the stroke the stop R meets the stopR and again throws the lever V and boss V to the right, or if both thecatches J and J have been pushed in the lever V falls into and is lockedagainst movement in the middle position and the motion stops. Sufficientspace is left between the bosses V and the clutchfingers V to allow thelever V to swing fairly over the center, so that the weight on the leverwill cause it to engage with the clutch'fingers V with sufficient forceto drive the machine.

Having thus described the nature and objects of my invention, what Iclaim as new, and desire to secure by Letters Patent, is

1. In a machine of the character described, a vertically-movable tableupon which the work is placed, a horizontally-arranged bar adapted to beraised by the upper edge of the table, a catch pivotally connected ateach end of the bar, means controlled by the movement of the bar foroscillating said catch about its pivot, and a pin arranged at eitherside of the upper edge of the table and adapted to be engaged by thecatch upon the upward movement of the table and bar, and thereby locksaid bar to said table, substantially as and for the purposes described.

2. In a machine of the character described, two Working rolls orcylinders, a verticallyarranged table, means for raising and loweringsaid table between said rolls, an endless apron carried by said table,means for shifting said apron 011 the table While the table is belowsaid rolls, a horizontally-arranged bar adapted to be raised by saidtable and located above the working rolls, a catch pivoted at either endof said bar, means controlled by the movement of the bar for oscillatingthe catch about its pivot and a pin arranged at either side of the upperedge of said table, all arranged so that When the bar is raised by thetable, the catches Will engage said pins and thereby lock the bar to thetable, substantially as and for the purposes described.

. JOSEPH HALL. \Vitnesses:

HERBERT DUNN, SIDNEY H. BAINES.

